| General Specifications |
| Further Technical Data |
| Max. AC + DC interference voltage at which measurement is conducted |
24 V |
| Max. measured interference voltage |
100 V |
| Max. interference current at which earthing resistance measurement is conducted using the clamp meter method |
3 Arms |
| Measuring current frequency |
125 Hz for 16⅔, 50 and 400 Hz systems, as well as 150 Hz for 60 Hz systems |
| Measuring voltage & current, 2-pole |
U < 24 Vrms, I ≥ 200 mA for R ≤ 2 Ω |
| Measuring voltage for 3-pole, 4-pole |
25 or 50 V |
| Measuring current (short-circuit current) for 3-pole, 4-pole |
> 200 mA |
| Max. measuring electrode resistance |
20 kΩ |
| Indication of too little current at the clamp meters for |
≤ 0.5 mA |
| Electrical Safety |
| Type of insulation |
Double per EN 61010-1 and IEC 61557 |
| Measuring category |
CAT III 600 V per EN 61010-1 |
| Fuses |
F2 (charging process): 2 A / 250 V, 5 x 20 mm, F1 (power supply): 1 A / 250 V, 5 x 20 mm |
| Power Supply |
| Rechargeable batteries |
Battery pack: NiMH, 4.8 V, 4.2 Ah |
| Battery charger parameters |
100 … 240 V, 50 … 60 Hz |
| Number of measurements for R, 2-pole |
> 1500 (1 Ω, 2 meas. per min.) |
| Number of measurements for RE |
> 1200 (RE = 10 Ω, RH = RS = 100 Ω, 2 meas. per min.) |
| Time required for resistance measurements using 2-pole method |
< 6 seconds |
| Time required for resistance measurements using other methods, as well as earth resistance |
< 8 seconds |
| Mechanical Design |
| Dimensions |
W x H x D: 40 x 17 x 31 cm |
| Instrument weight with batteries |
Approx. 4 kg |
| Protection for the housing per EN 60529 |
IP 54 |
| Ambient Conditions |
| Operating temperature |
–10 ... +50 °C |
| Temperature range within which the battery can be charged |
+10 °C ... +40 °C |
| Temperatures at which the charging process is interrupted |
< +5 °C and ≥ +50 °C |
| Reference temperature |
23 ±2 °C |
| Storage temperature |
-20 °C ... +80 °C |
| Relative humidity |
20 ... 85% |
| Nominal relative humidity |
40 ... 60% |
| Elevation |
< 2000 m |